/**
Date.prototype.isLeapYear 判断闰年
Date.prototype.Format 日期格式化
Date.prototype.DateAdd 日期计算
Date.prototype.DateDiff 比较日期差
Date.prototype.toString 日期转字符串
Date.prototype.toArray 日期分割为数组
Date.prototype.DatePart 取日期的部分信息
Date.prototype.MaxDayOfDate 取日期所在月的最大天数
Date.prototype.WeekNumOfYear 判断日期所在年的第几周
StringToDate 字符串转日期型
IsValidDate 验证日期有效性
CheckDateTime 完整日期时间检查
daysBetween 日期天数差
*/

    //---------------------------------------------------
    // 判断闰年
    //---------------------------------------------------
    Date.prototype.isLeapYear = function()  
    {  
    return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));  
    }  
    //---------------------------------------------------
    // 日期格式化
    // 格式 YYYY/yyyy/YY/yy 表示年份
    // MM/M 月份
    // W/w 星期
    // dd/DD/d/D 日期
    // hh/HH/h/H 时间
    // mm/m 分钟
    // ss/SS/s/S 秒
    //---------------------------------------------------
    Date.prototype.Format = function(formatStr)  
    {  
    var str = formatStr;  
    var month = this.getMonth() + 1;  //月份需要加一。
    var Week = ['日','一','二','三','四','五','六']; 
         str=str.replace(/yyyy|YYYY/,this.getFullYear());  
         str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100));  
         str=str.replace(/MM/,month>9?month:'0' + month);  
         str=str.replace(/M/g,this.getMonth());  
         str=str.replace(/w|W/g,Week[this.getDay()]);  
         str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():'0' + this.getDate());  
         str=str.replace(/d|D/g,this.getDate());  
         str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():'0' + this.getHours());  
         str=str.replace(/h|H/g,this.getHours());  
         str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():'0' + this.getMinutes());  
         str=str.replace(/m/g,this.getMinutes());  
         str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():'0' + this.getSeconds());  
         str=str.replace(/s|S/g,this.getSeconds());  
    return str;  
    }  
    //+---------------------------------------------------
    //| 求两个时间的天数差 日期格式为 YYYY-MM-dd
    //+---------------------------------------------------
    function daysBetween(DateOne,DateTwo) 
    {  
    var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ('-')); 
    var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ('-')+1); 
    var OneYear = DateOne.substring(0,DateOne.indexOf ('-')); 
    var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-')); 
    var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1); 
    var TwoYear = DateTwo.substring(0,DateTwo.indexOf ('-')); 
    var cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)- Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000);  
    return Math.abs(cha); 
    } 
    //+---------------------------------------------------
    //| 日期计算
    //+---------------------------------------------------
    Date.prototype.DateAdd = function(strInterval, Number) {  
    var dtTmp = this; 
    switch (strInterval) {  
    case 's' :return new Date(Date.parse(dtTmp) + (1000 * Number)); 
    case 'n' :return new Date(Date.parse(dtTmp) + (60000 * Number)); 
    case 'h' :return new Date(Date.parse(dtTmp) + (3600000 * Number)); 
    case 'd' :return new Date(Date.parse(dtTmp) + (86400000 * Number)); 
    case 'w' :return new Date(Date.parse(dtTmp) + ((86400000 * 7) * Number)); 
    case 'q' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds()); 
    case 'm' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds()); 
    case 'y' :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds()); 
         } 
    } 
    //+---------------------------------------------------
    //| 比较日期差 dtEnd 格式为日期型或者 有效日期格式字符串
    //+---------------------------------------------------
    Date.prototype.DateDiff = function(strInterval, dtEnd) {  
    var dtStart = this; 
    if (typeof dtEnd == 'string' )//如果是字符串转换为日期型
         {  
             dtEnd = StringToDate(dtEnd); 
         } 
    switch (strInterval) {  
    case 's' :return parseInt((dtEnd - dtStart) / 1000); 
    case 'n' :return parseInt((dtEnd - dtStart) / 60000); 
    case 'h' :return parseInt((dtEnd - dtStart) / 3600000); 
    case 'd' :return parseInt((dtEnd - dtStart) / 86400000); 
    case 'w' :return parseInt((dtEnd - dtStart) / (86400000 * 7)); 
    case 'm' :return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1); 
    case 'y' :return dtEnd.getFullYear() - dtStart.getFullYear(); 
         } 
    } 
    //+---------------------------------------------------
    //| 日期输出字符串，重载了系统的toString方法
    //+---------------------------------------------------
    Date.prototype.toString = function(showWeek) 
    {  
    var myDate= this; 
    var str = myDate.toLocaleDateString(); 
    if (showWeek) 
         {  
    var Week = ['日','一','二','三','四','五','六']; 
             str += ' 星期' + Week[myDate.getDay()]; 
         } 
    return str; 
    } 
   
    //+---------------------------------------------------
    //| 把日期分割成数组
    //+---------------------------------------------------
    Date.prototype.toArray = function() 
    {  
    var myDate = this; 
    var myArray = Array(); 
         myArray[0] = myDate.getFullYear(); 
         myArray[1] = myDate.getMonth(); 
         myArray[2] = myDate.getDate(); 
         myArray[3] = myDate.getHours(); 
         myArray[4] = myDate.getMinutes(); 
         myArray[5] = myDate.getSeconds(); 
    return myArray; 
    } 
    //+---------------------------------------------------
    //| 取得日期数据信息
    //| 参数 interval 表示数据类型
    //| y 年 m月 d日 w星期 ww周 h时 n分 s秒
    //+---------------------------------------------------
    Date.prototype.DatePart = function(interval) 
    {  
    var myDate = this; 
    var partStr=''; 
    var Week = ['日','一','二','三','四','五','六']; 
    switch (interval) 
         {  
    case 'y' :partStr = myDate.getFullYear();break; 
    case 'm' :partStr = myDate.getMonth()+1;break; 
    case 'd' :partStr = myDate.getDate();break; 
    case 'w' :partStr = Week[myDate.getDay()];break; 
    case 'ww' :partStr = myDate.WeekNumOfYear();break; 
    case 'h' :partStr = myDate.getHours();break; 
    case 'n' :partStr = myDate.getMinutes();break; 
    case 's' :partStr = myDate.getSeconds();break; 
         } 
    return partStr; 
    } 
    //+---------------------------------------------------
    //| 取得当前日期所在月的最大天数
    //+---------------------------------------------------
    Date.prototype.MaxDayOfDate = function() 
    {  
    var myDate = this; 
    var ary = myDate.toArray(); 
    var date1 = (new Date(ary[0],ary[1]+1,1)); 
    var date2 = date1.dateAdd(1,'m',1); 
    var result = dateDiff(date1.Format('yyyy-MM-dd'),date2.Format('yyyy-MM-dd')); 
    return result; 
    } 
    //+---------------------------------------------------
    //| 字符串转成日期类型
    //| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd
    //+---------------------------------------------------
    function StringToDate(DateStr) 
    {  
    var converted = Date.parse(DateStr); 
    var myDate = new Date(converted); 
    if (isNaN(myDate)) 
         {  
    //var delimCahar = DateStr.indexOf('/')!=-1?'/':'-';
    var arys= DateStr.split('-'); 
             myDate = new Date(arys[0],--arys[1],arys[2]); 
         } 
    return myDate; 
    } 
